Should you make before putting on electricity to run the following check: 1, the power supply voltage is appropriate (Overpressure is likely to cause the damage to the driver module); For input dc + / -Polarity must not wrong, on the motor drive controller models or current value is appropriate (At the beginning not too big); 2, control line, industrial site best shield to consider (If use twisted pair); 3, don't start in all of the need to connect the line, only together as the most basic system, after running well, and then gradually connection. 4, must make clear grounding method, or is not empty. 5, and began to run half an hour to closely observe the state of the motor, such as movement is normal, voice and temperature rise, found the problem immediately stop adjustment. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: